Earlier quoted context omitted.
I feel like what you’re describing boils down to a change in priorities for designs and how the user behavior is measured. Today, it seems to be mostly about recording what users do and then endlessly modifying the UI to extract the desired behaviors. This results in these kinds of layouts where a clean choice takes a back seat and user manipulation takes the front. This is less so the case with actual tools and UI’s…
"how dumb the majority of all users really is" - you could throw in how "dumb" grammar rules are too, given that "the majority of all users" might logically seem like it's singular and hence "is" would be correct, but I'm 90% sure in all cases that you say "the majority of X's", it acts as a plural noun phrase. I.e. it definitely should be "really are".
Example: "The majority of HN readers doesn't see any value in reading about fucking grammar in a thread about user interfaces."
When majority is used to describe a collection of individuals, it should be plural:
Example: "The majority of people who care about grammar, also usually care about properly capitalizing and punctuating their sentences."